Specifications

1.4.2 Memory configurations
Youmayinstall1GB,2GB,4GB,and8GBunbuerednon-ECCDDR3DIMMsintotheDIMMsockets.
• YoumayinstallvaryingmemorysizesinChannelAandChannelB.The
systemmapsthetotalsizeofthelower-sizedchannelforthedual-channel
conguration.Anyexcessmemoryfromthehigher-sizedchannelisthen
mapped for single-channel operation.
• AlwaysinstallDIMMswiththesameCASlatency.Foroptimalcompatibility,we
recommendthatyouinstallmemorymodulesofthesameversionordatecode
(D/C)fromthesamevendor.Checkwiththeretailertogetthecorrectmemory
modules.
• Memorymodulewithmemoryfrequencyhigherthan2133MHzandits
correspondingtimingortheloadedXMPProleisnottheJEDECmemory
standard. The stability and compatibility of these memory modules depend on
theCPU'scapabilitiesandotherinstalleddevices.
• DuetoIntel®chipsetlimitation,DDR31600MHzandhighermemorymodules
onXMPmodewillrunatthemaximumtransferrateofDDR31600MHz.
• Duetothememoryaddresslimitationon32-bitWindows
®
OS,whenyouinstall
4GBormorememoryonthemotherboard,theactualusablememoryfortheOS
canbeabout3GBorless.Foreectiveuseofmemory,werecommendthatyou
do any of the following:
-Useamaximumof3GBsystemmemoryifyouareusinga32-bitWindows
®
OS.
-Installa64-bitWindows
®
OSwhenyouwanttoinstall4GBormoreonthe
motherboard.
• ThismotherboarddoesnotsupportDIMMsmadeupof512Mb(64MB)chipsor
less.
• ThedefaultmemoryoperationfrequencyisdependentonitsSerialPresence
Detect(SPD),whichisthestandardwayofaccessinginformationfromamemory
module.Underthedefaultstate,somememorymodulesforoverclockingmay
operateatalowerfrequencythanthevendor-markedvalue.Tooperateatthe
vendor-markedoratahigherfrequency,refertosection2.4 Ai Tweaker menu
formanualmemoryfrequencyadjustment.
• Forsystemstability,useamoreecientmemorycoolingsystemtosupporta
fullmemoryload(2DIMMs)oroverclockingcondition.
1-8
Chapter 1: Product introduction